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mpv/libmpcodecs/ad_realaud.c

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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "config.h"
#ifdef USE_REALCODECS
//#include <stddef.h>
#ifdef HAVE_LIBDL
#include <dlfcn.h>
#endif
#include "help_mp.h"
#include "ad_internal.h"
#include "wine/windef.h"
static ad_info_t info = {
"RealAudio decoder",
"realaud",
"A'rpi", // win32 dlls support by alex
"Florian Schneider",
"binary real audio codecs"
};
LIBAD_EXTERN(realaud)
void *__builtin_new(unsigned long size) {
return malloc(size);
}
// required for cook's uninit:
void __builtin_delete(void* ize) {
free(ize);
}
#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
void *__ctype_b=NULL;
#endif
static unsigned long (*raCloseCodec)(void*);
static unsigned long (*raDecode)(void*, char*,unsigned long,char*,unsigned int*,long);
static unsigned long (*raFlush)(unsigned long,unsigned long,unsigned long);
static unsigned long (*raFreeDecoder)(void*);
static void* (*raGetFlavorProperty)(void*,unsigned long,unsigned long,int*);
//static unsigned long (*raGetNumberOfFlavors2)(void);
static unsigned long (*raInitDecoder)(void*, void*);
static unsigned long (*raOpenCodec)(void*);
static unsigned long (*raOpenCodec2)(void*, void*);
static unsigned long (*raSetFlavor)(void*,unsigned long);
static void (*raSetDLLAccessPath)(char*);
static void (*raSetPwd)(char*,char*);
#ifdef USE_WIN32DLL
static unsigned long WINAPI (*wraCloseCodec)(void*);
static unsigned long WINAPI (*wraDecode)(void*, char*,unsigned long,char*,unsigned int*,long);
static unsigned long WINAPI (*wraFlush)(unsigned long,unsigned long,unsigned long);
static unsigned long WINAPI (*wraFreeDecoder)(void*);
static void* WINAPI (*wraGetFlavorProperty)(void*,unsigned long,unsigned long,int*);
static unsigned long WINAPI (*wraInitDecoder)(void*, void*);
static unsigned long WINAPI (*wraOpenCodec)(void*);
static unsigned long WINAPI (*wraOpenCodec2)(void*, void*);
static unsigned long WINAPI (*wraSetFlavor)(void*,unsigned long);
static void WINAPI (*wraSetDLLAccessPath)(char*);
static void WINAPI (*wraSetPwd)(char*,char*);
static int dll_type = 0; /* 0 = unix dlopen, 1 = win32 dll */
#endif
static void *rv_handle = NULL;
#if 0
typedef struct {
int samplerate;
short bits;
short channels;
int unk1;
int unk2;
int packetsize;
int unk3;
void* unk4;
} ra_init_t ;
#else
/*
Probably the linux .so-s were compiled with old GCC without setting
packing, so it adds 2 bytes padding after the quality field.
In windows it seems that there's no padding in it.
-- alex
*/
/* linux dlls doesn't need packing */
typedef struct /*__attribute__((__packed__))*/ {
int samplerate;
short bits;
short channels;
short quality;
/* 2bytes padding here, by gcc */
int bits_per_frame;
int packetsize;
int extradata_len;
void* extradata;
} ra_init_t;
/* windows dlls need packed structs (no padding) */
typedef struct __attribute__((__packed__)) {
int samplerate;
short bits;
short channels;
short quality;
int bits_per_frame;
int packetsize;
int extradata_len;
void* extradata;
} wra_init_t;
#endif
#ifdef HAVE_LIBDL
static int load_syms_linux(char *path)
{
void *handle;
mp_msg(MSGT_DECVIDEO, MSGL_INFO, "opening shared obj '%s'\n", path);
handle = dlopen(path, RTLD_LAZY);
if (!handle)
{
mp_msg(MSGT_DECVIDEO, MSGL_WARN, "Error: %s\n", dlerror());
return 0;
}
raCloseCodec = dlsym(handle, "RACloseCodec");
raDecode = dlsym(handle, "RADecode");
raFlush = dlsym(handle, "RAFlush");
raFreeDecoder = dlsym(handle, "RAFreeDecoder");
raGetFlavorProperty = dlsym(handle, "RAGetFlavorProperty");
raOpenCodec = dlsym(handle, "RAOpenCodec");
raOpenCodec2 = dlsym(handle, "RAOpenCodec2");
raInitDecoder = dlsym(handle, "RAInitDecoder");
raSetFlavor = dlsym(handle, "RASetFlavor");
raSetDLLAccessPath = dlsym(handle, "SetDLLAccessPath");
raSetPwd = dlsym(handle, "RASetPwd"); // optional, used by SIPR
if (raCloseCodec && raDecode && /*raFlush && */raFreeDecoder &&
raGetFlavorProperty && (raOpenCodec||raOpenCodec2) && raSetFlavor &&
/*raSetDLLAccessPath &&*/ raInitDecoder)
{
rv_handle = handle;
return 1;
}
mp_msg(MSGT_DECAUDIO,MSGL_WARN,"Cannot resolve symbols - incompatible dll: %s\n",path);
dlclose(handle);
return 0;
}
#endif
#ifdef USE_WIN32DLL
#ifdef WIN32_LOADER
#include "../loader/ldt_keeper.h"
#endif
void* WINAPI LoadLibraryA(char* name);
void* WINAPI GetProcAddress(void* handle,char *func);
int WINAPI FreeLibrary(void *handle);
static int load_syms_windows(char *path)
{
void *handle;
mp_msg(MSGT_DECVIDEO, MSGL_INFO, "opening win32 dll '%s'\n", path);
#ifdef WIN32_LOADER
Setup_LDT_Keeper();
#endif
handle = LoadLibraryA(path);
if (!handle)
{
mp_msg(MSGT_DECVIDEO, MSGL_WARN, "Error loading dll\n");
return 0;
}
wraCloseCodec = GetProcAddress(handle, "RACloseCodec");
wraDecode = GetProcAddress(handle, "RADecode");
wraFlush = GetProcAddress(handle, "RAFlush");
wraFreeDecoder = GetProcAddress(handle, "RAFreeDecoder");
wraGetFlavorProperty = GetProcAddress(handle, "RAGetFlavorProperty");
wraOpenCodec = GetProcAddress(handle, "RAOpenCodec");
wraOpenCodec2 = GetProcAddress(handle, "RAOpenCodec2");
wraInitDecoder = GetProcAddress(handle, "RAInitDecoder");
wraSetFlavor = GetProcAddress(handle, "RASetFlavor");
wraSetDLLAccessPath = GetProcAddress(handle, "SetDLLAccessPath");
wraSetPwd = GetProcAddress(handle, "RASetPwd"); // optional, used by SIPR
if (wraCloseCodec && wraDecode && /*wraFlush && */wraFreeDecoder &&
wraGetFlavorProperty && (wraOpenCodec || wraOpenCodec2) && wraSetFlavor &&
/*wraSetDLLAccessPath &&*/ wraInitDecoder)
{
rv_handle = handle;
dll_type = 1;
return 1;
}
mp_msg(MSGT_DECAUDIO,MSGL_WARN,"Cannot resolve symbols - incompatible dll: %s\n",path);
FreeLibrary(handle);
return 0;
}
#endif
static int preinit(sh_audio_t *sh){
// let's check if the driver is available, return 0 if not.
// (you should do that if you use external lib(s) which is optional)
unsigned int result;
int len=0;
void* prop;
char *path;
path = malloc(strlen(REALCODEC_PATH)+strlen(sh->codec->dll)+2);
if (!path) return 0;
sprintf(path, REALCODEC_PATH "/%s", sh->codec->dll);
/* first try to load linux dlls, if failed and we're supporting win32 dlls,
then try to load the windows ones */
#ifdef HAVE_LIBDL
if (strstr(sh->codec->dll,".dll") || !load_syms_linux(path))
#endif
#ifdef USE_WIN32DLL
if (!load_syms_windows(sh->codec->dll))
#endif
{
mp_msg(MSGT_DECVIDEO, MSGL_ERR, MSGTR_MissingDLLcodec, sh->codec->dll);
mp_msg(MSGT_DECVIDEO, MSGL_HINT, "Read the RealAudio section of the DOCS!\n");
free(path);
return 0;
}
#ifdef USE_WIN32DLL
if((raSetDLLAccessPath && dll_type == 0) || (wraSetDLLAccessPath && dll_type == 1)){
#else
if(raSetDLLAccessPath){
#endif
int i;
// used by 'SIPR'
path = realloc(path, strlen(REALCODEC_PATH) + 12);
sprintf(path, "DT_Codecs=" REALCODEC_PATH);
if(path[strlen(path)-1]!='/'){
path[strlen(path)+1]=0;
path[strlen(path)]='/';
}
path[strlen(path)+1]=0;
#ifdef USE_WIN32DLL
if (dll_type == 1)
{
for (i=0; i < strlen(path); i++)
if (path[i] == '/') path[i] = '\\';
wraSetDLLAccessPath(path);
}
else
#endif
raSetDLLAccessPath(path);
}
#ifdef USE_WIN32DLL
if (dll_type == 1){
if(wraOpenCodec2)
result=wraOpenCodec2(&sh->context,REALCODEC_PATH "\\");
else
result=wraOpenCodec(&sh->context);
} else
#endif
if(raOpenCodec2)
result=raOpenCodec2(&sh->context,REALCODEC_PATH "/");
else
result=raOpenCodec(&sh->context);
if(result){
mp_msg(MSGT_DECAUDIO,MSGL_WARN,"Decoder open failed, error code: 0x%X\n",result);
return 0;
}
// printf("opencodec ok (result: %x)\n", result);
free(path); /* after this it isn't used anymore */
sh->samplerate=sh->wf->nSamplesPerSec;
sh->samplesize=sh->wf->wBitsPerSample/8;
sh->channels=sh->wf->nChannels;
{
ra_init_t init_data={
sh->wf->nSamplesPerSec,
sh->wf->wBitsPerSample,
sh->wf->nChannels,
100, // quality
((short*)(sh->wf+1))[0], // subpacket size
((short*)(sh->wf+1))[3], // coded frame size
((short*)(sh->wf+1))[4], // codec data length
((char*)(sh->wf+1))+10 // extras
};
#ifdef USE_WIN32DLL
wra_init_t winit_data={
sh->wf->nSamplesPerSec,
sh->wf->wBitsPerSample,
sh->wf->nChannels,
100, // quality
((short*)(sh->wf+1))[0], // subpacket size
((short*)(sh->wf+1))[3], // coded frame size
((short*)(sh->wf+1))[4], // codec data length
((char*)(sh->wf+1))+10 // extras
};
if (dll_type == 1)
result=wraInitDecoder(sh->context,&winit_data);
else
#endif
result=raInitDecoder(sh->context,&init_data);
if(result){
mp_msg(MSGT_DECAUDIO,MSGL_WARN,"Decoder init failed, error code: 0x%X\n",result);
return 0;
}
// printf("initdecoder ok (result: %x)\n", result);
}
#ifdef USE_WIN32DLL
if((raSetPwd && dll_type == 0) || (wraSetPwd && dll_type == 1)){
#else
if(raSetPwd){
#endif
// used by 'SIPR'
#ifdef USE_WIN32DLL
if (dll_type == 1)
wraSetPwd(sh->context,"Ardubancel Quazanga");
else
#endif
raSetPwd(sh->context,"Ardubancel Quazanga"); // set password... lol.
}
#ifdef USE_WIN32DLL
if (dll_type == 1)
result=wraSetFlavor(sh->context,((short*)(sh->wf+1))[2]);
else
#endif
result=raSetFlavor(sh->context,((short*)(sh->wf+1))[2]);
if(result){
mp_msg(MSGT_DECAUDIO,MSGL_WARN,"Decoder flavor setup failed, error code: 0x%X\n",result);
return 0;
}
#ifdef USE_WIN32DLL
if (dll_type == 1)
prop=wraGetFlavorProperty(sh->context,((short*)(sh->wf+1))[2],0,&len);
else
#endif
prop=raGetFlavorProperty(sh->context,((short*)(sh->wf+1))[2],0,&len);
mp_msg(MSGT_DECAUDIO,MSGL_INFO,"Audio codec: [%d] %s\n",((short*)(sh->wf+1))[2],prop);
#ifdef USE_WIN32DLL
if (dll_type == 1)
prop=wraGetFlavorProperty(sh->context,((short*)(sh->wf+1))[2],1,&len);
else
#endif
prop=raGetFlavorProperty(sh->context,((short*)(sh->wf+1))[2],1,&len);
if(prop){
sh->i_bps=((*((int*)prop))+4)/8;
mp_msg(MSGT_DECAUDIO,MSGL_INFO,"Audio bitrate: %5.3f kbit/s (%d bps) \n",(*((int*)prop))*0.001f,sh->i_bps);
} else
sh->i_bps=12000; // dunno :((( [12000 seems to be OK for crash.rmvb too]
// prop=raGetFlavorProperty(sh->context,((short*)(sh->wf+1))[2],0x13,&len);
// mp_msg(MSGT_DECAUDIO,MSGL_INFO,"Samples/block?: %d \n",(*((int*)prop)));
sh->audio_out_minsize=128000; // no idea how to get... :(
sh->audio_in_minsize=((short*)(sh->wf+1))[1]*sh->wf->nBlockAlign;
return 1; // return values: 1=OK 0=ERROR
}
static int init(sh_audio_t *sh_audio){
// initialize the decoder, set tables etc...
// you can store HANDLE or private struct pointer at sh->context
// you can access WAVEFORMATEX header at sh->wf
// set sample format/rate parameters if you didn't do it in preinit() yet.
return 1; // return values: 1=OK 0=ERROR
}
static void uninit(sh_audio_t *sh){
// uninit the decoder etc...
// again: you don't have to free() a_in_buffer here! it's done by the core.
#ifdef USE_WIN32DLL
if (dll_type == 1)
{
if (wraFreeDecoder) wraFreeDecoder(sh->context);
if (wraCloseCodec) wraCloseCodec(sh->context);
}
#endif
if (raFreeDecoder) raFreeDecoder(sh->context);
if (raCloseCodec) raCloseCodec(sh->context);
#ifdef USE_WIN32DLL
if (dll_type == 1)
{
if (rv_handle) FreeLibrary(rv_handle);
} else
#endif
// this dlclose() causes some memory corruption, and crashes soon (in caller):
// if (rv_handle) dlclose(rv_handle);
rv_handle = NULL;
}
static unsigned char sipr_swaps[38][2]={
{0,63},{1,22},{2,44},{3,90},{5,81},{7,31},{8,86},{9,58},{10,36},{12,68},
{13,39},{14,73},{15,53},{16,69},{17,57},{19,88},{20,34},{21,71},{24,46},
{25,94},{26,54},{28,75},{29,50},{32,70},{33,92},{35,74},{38,85},{40,56},
{42,87},{43,65},{45,59},{48,79},{49,93},{51,89},{55,95},{61,76},{67,83},
{77,80} };
static int decode_audio(sh_audio_t *sh,unsigned char *buf,int minlen,int maxlen){
int result;
int len=-1;
int sps=((short*)(sh->wf+1))[0];
int w=sh->wf->nBlockAlign; // 5
int h=((short*)(sh->wf+1))[1];
int cfs=((short*)(sh->wf+1))[3];
// printf("bs=%d sps=%d w=%d h=%d \n",sh->wf->nBlockAlign,sps,w,h);
#if 1
if(sh->a_in_buffer_len<=0){
// fill the buffer!
if (sh->format == mmioFOURCC('1','4','_','4')) {
demux_read_data(sh->ds, sh->a_in_buffer, sh->wf->nBlockAlign);
sh->a_in_buffer_size=
sh->a_in_buffer_len=sh->wf->nBlockAlign;
} else
if (sh->format == mmioFOURCC('2','8','_','8')) {
int i,j;
for (j = 0; j < h; j++)
for (i = 0; i < h/2; i++)
demux_read_data(sh->ds, sh->a_in_buffer+i*2*w+j*cfs, cfs);
sh->a_in_buffer_size=
sh->a_in_buffer_len=sh->wf->nBlockAlign*h;
} else
if(!sps){
// 'sipr' way
int j,n;
int bs=h*w*2/96; // nibbles per subpacket
unsigned char *p=sh->a_in_buffer;
demux_read_data(sh->ds, p, h*w);
for(n=0;n<38;n++){
int i=bs*sipr_swaps[n][0];
int o=bs*sipr_swaps[n][1];
// swap nibbles of block 'i' with 'o' TODO: optimize
for(j=0;j<bs;j++){
int x=(i&1) ? (p[(i>>1)]>>4) : (p[(i>>1)]&15);
int y=(o&1) ? (p[(o>>1)]>>4) : (p[(o>>1)]&15);
if(o&1) p[(o>>1)]=(p[(o>>1)]&0x0F)|(x<<4);
else p[(o>>1)]=(p[(o>>1)]&0xF0)|x;
if(i&1) p[(i>>1)]=(p[(i>>1)]&0x0F)|(y<<4);
else p[(i>>1)]=(p[(i>>1)]&0xF0)|y;
++i;++o;
}
}
sh->a_in_buffer_size=
sh->a_in_buffer_len=w*h;
} else {
// 'cook' way
int x,y;
w/=sps;
for(y=0;y<h;y++)
for(x=0;x<w;x++){
demux_read_data(sh->ds, sh->a_in_buffer+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
}
sh->a_in_buffer_size=
sh->a_in_buffer_len=w*h*sps;
}
}
#else
if(sh->a_in_buffer_len<=0){
// fill the buffer!
demux_read_data(sh->ds, sh->a_in_buffer, sh->wf->nBlockAlign);
sh->a_in_buffer_size=
sh->a_in_buffer_len=sh->wf->nBlockAlign;
}
#endif
#ifdef USE_WIN32DLL
if (dll_type == 1)
result=wraDecode(sh->context, sh->a_in_buffer+sh->a_in_buffer_size-sh->a_in_buffer_len, sh->wf->nBlockAlign,
buf, &len, -1);
else
#endif
result=raDecode(sh->context, sh->a_in_buffer+sh->a_in_buffer_size-sh->a_in_buffer_len, sh->wf->nBlockAlign,
buf, &len, -1);
sh->a_in_buffer_len-=sh->wf->nBlockAlign;
// printf("radecode: %d bytes, res=0x%X \n",len,result);
return len; // return value: number of _bytes_ written to output buffer,
// or -1 for EOF (or uncorrectable error)
}
static int control(sh_audio_t *sh,int cmd,void* arg, ...){
// various optional functions you MAY implement:
switch(cmd){
case ADCTRL_RESYNC_STREAM:
// it is called once after seeking, to resync.
// Note: sh_audio->a_in_buffer_len=0; is done _before_ this call!
return CONTROL_TRUE;
case ADCTRL_SKIP_FRAME:
// it is called to skip (jump over) small amount (1/10 sec or 1 frame)
// of audio data - used to sync audio to video after seeking
// if you don't return CONTROL_TRUE, it will defaults to:
// ds_fill_buffer(sh_audio->ds); // skip 1 demux packet
return CONTROL_TRUE;
}
return CONTROL_UNKNOWN;
}
#endif
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